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UKismetStringLibrary::Trim

function Engine Blueprint Since unknown
#include "Kismet/KismetStringLibrary.h"
Access: public Specifiers: staticBlueprintPure

Description

Removes whitespace characters from the front of a string. Commonly used to clean up user-entered text before validating or displaying it.

Caveats & Gotchas

  • Only trims leading whitespace — trailing whitespace is left untouched; use TrimTrailing for that side.
  • "Whitespace" follows FChar::IsWhitespace, which includes tabs and newlines, not just spaces.

Signature

static FString Trim(const FString& SourceString)

Parameters

Name Type Description Default
SourceString const FString& The string to trim.

Return Type

FString

Example

Clean up a text field C++
FString Cleaned = UKismetStringLibrary::TrimTrailing(UKismetStringLibrary::Trim(RawInput));

Version History

Introduced in: unknown

Version Status Notes
5.6 stable

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